Apparatus for making windings



0. W. FRANCIS. APPARATUS FOR MAKING WINDINGS.

I a n APPLICATION FILED FEB- 3, I920. 1 3 19, 1550 4 SHEETSSHEET I.

ATTORNEYJ) Patented May 31, 1921.

C. .W. FRANCIS. APPARATUS FOR MAKING WINDINGS.

APPLICATION FILED FEB. 3,1920. 1,3?9 755 atented May 31,1921.

4 SHEEIS-SHEET Z.

A TTORNEYS C. W. FRANCIS. APPARATUS FOR MAKING wmomss.

' APPLICATION FILED FEB. s. 1920. 1,379,755, v Patented May 31, 19211 4SHEETSSHEET 3- W1 TNESS:

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, ATTORNEVJ' I G. W. FRANCIS. APPARATUS FOR MAKING WINDINGS.

APPLICATION FILED FEB. 3. 1920. 1,379,?55 PatenM May 31, 19211,

4 SHEETS-SHEET 4.

2 a 0 4 4 u iOiD olypbbipo A TTORNEYJ warren STATES FATEN'E @FFEQZE.

CHARLES W. FRANCIS, OF PATERSON, NEW JERSEY, ASSIGNOR TO GILLESPIE MOTORCOMPANY, OF PATERSON, NEW JERSEY, A CORPGRATION OF DELAWARE.

APPARATUS FOR MAKING WINDINGS.

Specification of Letters Patent.

Patented May 31, 11921.

Application filed February 3, 1920. Serial No. 356,027.

To all whom it may concern:

Be it known that I, CHARLES W. FRANOIs, a citizen of the United States,residing at Paterson, in the county of Passaic and State of New Jersey,have invented certain new and useful Improvements in Apparatus forMaking Windings, of which the following is a specification.

My invention relates to apparatus for making awinding which isparticularly adapted for the field coils of multi-polar electricmachines, it being understood that the apparatus is capable of use inthe making of windings of a large variety of shapes and for differentpurposes.

One of the objects of my invention is to provide apparatus for making awinding in which there shall be a number of flat, separatecoils ofincreasing sizes and ar ranged with suflicient space between the sidesof the coils so that the same may be slipped around the poles of amulti-polar field piece, which winding shall be of one continuous pieceof wire so that the winding can be made cheaply and at the same timehave its insulation uniform throughout the completed winding.

Another object of my invention is to provide an apparatus for makingsuch a winding as has just been described, and others of a similarcharacter in which coils occupying the same plane may be wound so thateach succeeding coil surrounds the preceding inner coil and yet isseparated therefrom by a considerable space, and particularly anapparatus by which such winding may be carried out in a continuousmanner by the placing of suitable forms in position after the precedingform has received its predetermined number of turns of wire.

Another object of'my invention is to provide an apparatus by which sucha winding may be made expeditiously and preferably automatically.

lVith'these and other objects in view, my invention consists of theapparatus hereinafter fully described and particularly pointed out inthe appended claims.

In the drawings, Figure 1 illustrates one form of winding; Fig. 2 a sideelevation on a relatively small scale of an illustrative form of machinefor carrying out my invention; Fig. 2 is a fragmentary portion of Fig.2; Fig. 3 a side elevation somewhat enlarged, of a portion of Fig. 2;Fig. 4 a

plan view of Fig. 3; Fig. 5 an end elevatlon of Fig. 3 with the followerplate and its support removed, and Figs. 6 and 7 enlarged partial viewsof the mechanism shown in Fig. 8 with the parts in different posltlons.

In the drawings, the same parts are referred to by the same referencecharacters in the several views.

Fig. 1 is a side elevation, more or less diagrammatic, of a form ofwinding such as the form of apparatus illustrated is particularlydesigned to make. In this drawing only two layers of wire have beenshown in each coil, but'it will be understood that as many as desiredmay be provided, and particularly that the number of turns in eachplane, which will determine the width of the winding, may be of anydesired number. Beginning at the terminal 10 the wire, which iscontinuous throughout the winding, passes into the inner coil 11 aroundwhich, in the diagrammatic .view, it passes twice completely, the end12' then passing to the next coil 13 around which it again passes twicecompletely,'with its end 14. passing to the outer coil 15, the end ofwhich, 16, is preferably bent upwardly parallel or around the terminal10. It will be understood that any desired number of coils may be formedin the winding.

It will be observed that in'the form shown in Fig. 1, the top and bottomof the respective coils are adjacent each other, whereas the sides arewidely separated from the sides of adjacent coils.

In order to provide an easy method by which the winding may be kept inshape and position until the winding is placed in the machine in whichit is to be used, I preferably provide a temporary binding wire such as17, 18, at the top and bottom of the winding, this temporary bindingwire being fastened so as to hold the coils together until they are inposition of'use.

It, of course, is not new to form a winding of a number of coils, butthe particular advantage of my apparatus consists of forming such awinding from a continuous piece of wire so that the insulation on thewire is continuous throughout the winding. Furthermore, in the formingof such. a winding, the delay occasioned by fastening the ends ofsuccessive coils together is avoided.

In order to form such a coil as that shown in Fig. 1, I preferably windthe desired number of turns around a former which is shaped to give therequired interior shape to the inner coil 11, such turns being continueduntil the desired size of coil is obtained. Then, without removing theinner coil 11 from its former, I place a secondary former around theinner coil 11 and continue the winding from the coil 11 around thissecondary former, which winding is continued again for the requirednumber of turns when I again place another secondary former around thepreceding one, and continue the winding around this. The placing ofsuccessively larger secondary'formers around the preceding formers isthus continued until the desired number of coils is obtained, when theends of the winding are carried upadjacent to each other, and preferablythe entire winding temporarily bound, as by temporary binders 17, 18 ofFig. 1.

While, of course, my novel method of winding may be carried out by handin 0011- nection with any suitable formers, I prefer to do such windingby a machine and to that end I provide as my preferred mechanism thearrangement shown in Figs. 2 to 7 inclusive.

My illustrative form of mechanism is shown in complete side elevation inFig. 2 in which a driving shaft 20 is supported in bearings 21 and 22,and rotated by a mecha nism to be more fully described hereinafter.

on the end of theshaft 20 and fastened hereinafter. In alinement withthe shaft 20' is a bar 24 supported in bearings 25, 26, the bar having ahandle 27 and being arranged to slide longitudinally through itsbearings. In the bearing 25 is a screw 28 having one end located in alongitudinal slot 29 in the bar 24, this slot having a right angle turn30.

On the end of the bar 24 and slidingly mounted thereon, so as to be freeto turn, is a follower plate 31 normally held to the left of Fig. 2 by aspring 32 pushing against a shoulder on the bar 24 and against a loosecollar 33, a pin 34 holding the follower 31 on the bar 24.

By grasping the handle 27 the operator may move the bar 24 to the leftof Fig. 2

from the position shown in Fig. 2 to the position shown in Fig. 2, thebar being then rotated. so as to bring the end of the screw 28 into theportion 30 of the slot in bar 24. The bar is then locked against motionto the right of Fig. 2. The effect of this motion will be referred toafter the formers with which the follower coeperates, are described.

'Asa preferred form of former particularly adapted for winding the coilsof the winding shown in Fig. 1, I have illustrated formers consisting offlat plates having projecting pins, four in number in the case illustrated, these pins being set to mark the boundaries of the area of thecoil to be formed on that particular former, the pins 231, 232, 233, and234 being located in the plate 23, preferably, so as to determine thecorners of the inner coil 11 of the winding shown in Fig. 1. The plate23 is attached to the end ofthe shaft 20 so as to rotate therewith andto be immovable longitudinally thereon. Slidingly mounted on the shaft20 is the plate 35 of a secondary former, the pins 351, 352, 353 and 354of which are located in relation to the pins on the primary'former plate23 so as to constitute the corners or boundaries of the area of the nextlarger coil of the winding to be formed. In the shape of coilillustrated, the top and bottom wires are-slightly bowed to enable thetop and bottom wires of the sec ond coil to lie outsidethe top andbottom wires of the primary coil although the side wires of the secondcoil are slightly shorter than the side wires of the primary coil. Togive this form to the winding the pins of the secondary former arespaced closer across the former than are the pins of the primary former.The pinsof the plate 35 project through holes formed in the plate 23 andnormally, the plate 35 is moved far enough from the plate 23 so that theends of the pins do not project to the right o the plate 23.

Similarly, in the form illustrated, another secondary former composingthe plate 36 and the pins 361, 362, 363, and 364, 18 mounted on the hubof the'plate 35 so as to slide thereon, the pins on the plate 36projecting through holes in the plate 35, and the plate 23 beingprovided with 'corresponding holes to receive them when they are moved,as described hereinafter. The end of the hub of the plate 36 is grooved,in this groove being placed a member 37 which is free to turn therein.Surrounding the member 37 and connected thereto by pins 371 is the eye38 of a handle 39 pivoted at 40 on a vertical member 41, this memberbeing provided with a spring 42 one end of which is fastened to a fixedcol lar 43, the other end of which bears against the handle 39 so as tonormally tend to rotate that handle counterclockwise in Fig. 4. Betweenthe inner end of the hub of the plate 35 and a collar 44 on the shaft 20is a spring 45, the collar 44 bearing against the end of the bearing 22.So long as the handle 39 is held in the position shown in Fig. 4, theprimary and secondary formers are held in the positions shown in Figs. 3and 4, the follower plate 31 being in the position indicated with thepins on the plate 23 pro jecting into corresponding holes in thefollower plate 31, so as to leave an operative space between the plates23 and 31 into which the strand of wire may be fed to be wound aroundthe pins of the primary former as the latter are rotated, such a windingbeing indicated in dotted lines in Fig. 5. The follower plate is looselymounted on the end of the bar 24 so that as it is brought. up into theposition shown in F ig. 3, the plate 31 may be rotated by hand, ifnecessary, until the holes in this plate coincide with the pins ,on theplate 23, when the spring .32 .will force the plate 31 forward into theposition shown in Fig. 3.

Preferably, the motion of the handle 39, which controls the operation ofthe succes sive formers, is controlled by automatic means, and as oneembodiment of such a means I have illustrateda detent-member 46 pivotedat 47 on a bracket 48 extending up from the bed plate of the machine.Extending across the machine, is a cam shaft 49 having on the endthereof, a cam 50. On the shaft 20 is a worm 51 geared to a worm wheel52 on the cam shaft 49. Preferably, the cam shaft 49 is hollow to permita compression rod 53 to extend therethrough so as to frictionallyconnect the cam 50 with the shaft 49. To this end the shaft 49 isprovided with a friction disk 54 and a friction piece 55, which contactswith a friction hub 56 on the cam 50. The head 57 of the compression rod53 is outside of the cam 50 and at the opposite end the head 53 isprovided with a spring 58 and adjusting nuts 59. As is well understoodwith this formof construction, when the nuts 59 are screwed up, thespring 58 is compressed, and this serves to draw the cam 50 against thedisk 54, the amount of friction between the members of the frictioncoupling being dependent on the amount of pressure exerted by the spring58.

The cam 50 is provided with a number of concentric parts of which 501 isthe largest in diameter, 502 the next, and 503 the last, it beingunderstood that there would be as many of these concentric portions asthere are coils in the winding to be formed. These concentric portionsare separated by sudden drops as 504, 505, 506 and 507, the spacebetween the drops 506 and 507 being occupied by a concentric portion,and then a sudden rise 508. The cam 50 may also be 7 provided with ahandle 509.

The detent member 46 is provided with a toe piece 461 and two detentfaces 462 and 463.

In the position shown with the toe 461 resting on the concentric portion501 of the cam, the handle 39 is held in the position shown in Figs. 3and 4 by contact between the handle and the detent face 462. In thisposition of the handle the end of the hub of the plate 36"contacts withthe collar 351 of the hub of the plate 35, so that the springs 45 and 42are restrained from action.

As the cam 50 is rotated by the turning of the shaft 20 during thewinding of the inner coil, the toe 461 moves along the concentricportion 501 until the drop 504 is reached. The member 46 is then pulleddownward by the spring 60 into the position shown in Fig. 6, which willpermit the springs 42 and 45 to move the handle 39 to the position shownin F ig. 6, and the secondary former. plates 35 and 36 to the positionshown in Fig. 6v with the pins 351, 352, 353 and 354 projecting throughthe plate 23 and across the operative space between the plate 23 andfollower 31. As the cam 50 continues to be turned by the rotation of theshaft 20, when the toe 461 reaches the drop 505, the member 46 is movedto the position shown in Fig. 7, at which time the handle 39 may passfreely over the top of the member 46 to move the plate 36' against theplate 35 to bring the pins 361, 362, 363 and 364 into the position shownin Fig. 7 extending across the operative space between the plates 23 and31.

The continuous rotation of the cam 50 finally permits the toe 461 todrop past the portion 506, and I utilize this drop for the purpose ofbringing the machine to rest au- .1

tomatically. To this end, in the form illustrated, I provide a toe 61 onthe member 46 which is adapted to strike a latch 62 pivoted at 63 on alever 64 pivoted at 65 and.

connected in the usual manner with the hub of a collar 66'on the shaft20, so that as the lever 64 turns on the pivot 65 the collar 66 may bemoved longitudinally of the shaft. When the lever 64moves'counterelockwise in Fig. 4, pressure is exerted against the hub ofa driving pulley 67 to cause pressure to be exerted between frictionsurfaces 68 on the driving pulleys '67 and 69 on a hand wheel 70 whichis connected to the shaft 20. When the lever 64 is in the position shownin Fig; 4, therefore, power from the driving pulley 67 will betransmitted through the hand wheel 70 to the shaft 20.

In the form illustrated, the lever 64 is moved by a bell crank 65 whichmay be foot operated, this bell crank having a toe 66 which engages witha projection on the member 62, this member being normally held in adownward position by a spring 67 The bell crank 65 is normally movedcounterclockwise by a spring 68. In the position shown in Figs. 3 and 4the bell crank-65 has been turned clockwise sothat the toe 66 engagingwith the member 62, has caused the driving friction surfaces to contactto set the driving shaft 20 into rotation. It will be-understood thatthe foot treadle which moves the bell crank 65 will be provided with asuitable detent arrangement to hold it in its downward position.

When the toe 461 reaches the drop 506, the member 46 is then turned onits pivot to such an extent that the toe 61 strikes the member 62 andlifts it above the toe 66 so as to free it therefrom. This releases thepressure between the driving surfaces, and

- the shaft 20 comes to a stop.

Attached to the member 46 1s a fixed cam member 71 which extends overthe handle 39. When the member 46 is in the position shown in Fig. 7,the further rotation of the shaft 20 is made impossible because themember 46 cannot be swung upward to throw the toe 61 downward, so as topermit the toe 66 to engage with the hook on the member 62, because theend of the memberv 46 is directly beneath the handle 39. The operator,however, by throwing the handle to the left of Fig. 4 will automaticallymove the member 46 to correct position by reason of the contact of thecam 71 with the top of the handle 39. Then, the'machine may be turned byhand, if necessary, so that the high portion 508 will first swing themember 46 unnecessarily high, and when the too 461 drops past theportion 507, the machine is 1n position again to resume its cycle. At

this time the toe 61 is sufliciently far below the member 62 to permitthe driving clutch to be engaged to begin the rotation of the shaft 20.1 I

In practice, with the parts in the position shown in Fig. 3, thefollower plate is first moved to the left of Fig. 2 by means of thehandle 2' 7, and locked in position, the spring 32 permltting thislocking, even when the holes in the plate 31 are not opposite the plnson the plate 23. The plate 31 may be turned until its holes coincidewith these plns. Then the wire is led in over suitable guide rolls as81, 82 and around the pins on the plate 23, the rotation of the former23 and with it the follower plate 31, being commenced by throwing in thedriving clutch. After the predetermined number of turns have been madeon the primary former, which number of turns is determined, of course,by the length of the concentric portion 501, the end of such concentricportionis reached, and the member 46 turned to permit the plate 35 tomove against the plate 23 to project its pins across the operativespace. the shaft 20 is continuous, the winding thereupon is passedaround the pins 351, 352, 353 and 354. When the plate 35 moves forwardthe plate 36 also moves forward, but since it is stopped so as tomaintain the same relative position to the plate 36 which it had before,its pins do not project across place the wire in turn is passed aroundthe.

outermost pin of the second secondary Since the turning of former. Whenthe winding has been completed and the machine brought to a stopautomatically by a further motion of the.

member 46, the operator preferably places temporary fasteners around thetop and bottom of the winding, and to permit this to be done I providerecesses, 83, 84 in the plate 23, and corresponding recesses in thefollower 31, these recesses permitting thetemporary fastening wire to bepassed around the coils. After the coils are thus fastened,

the follower plate 31 is moved to the right In order to guide the handle39 I provide a guide 85 which is simply a horizontal member having ahorizontal slot bearing against the top and bottom of the handle 39,this guide being cut away at one end to provide clearance for theplate36.

I provide the friction drive for the cam 50 so that if,because ofcarelessness on the part of the operator, the shaft 20 is turned beforethe handle 39 is brought to the neutral position shown in Fig. 4, aftera winding has been completed, there will notbe a jamming of the parts.In such case the friction slips. When, however, the jam is relieved thecam 50 may be returned to its proper initial position by relieving thefriction and then restoring it, the handle 509 being used, if desired,

of secondary or movable formers will be de pendent on the number ofsuccessive coils to be formed, and that the numbers of such formers,which can be arranged to be moved into operative position successively,is substantially without number.

I claim 1. In a coil winding machine, a plurality of unitary forms ofprogressively increasing area, with the smallest form only in operativeposition, means to rotate the forms and means to move each form as aunit into operative position. e

2. In a coil winding machine, a plurality of forms of progressivelyincreasing area, with the smallest form only in operative position,means to rotate the forms and means to move the forms progressively intooperative position, and a follower adapted to be movedtoward and awayfrom said osition means to rotate the forms and' automatic means to movethe forms progressively into operative position.

4. In a coil winding machine, a plurality of forms of progressivelyincreasing area, each comprising a plate with four pins projectingtherefrom and the plates being arranged side by side, each plate of thesmaller forms having openings through which the pins of the nextadjacent form may pass and means to move said plates together to bringeach set of pins progressively into operative position.

5. In a coil winding machine, a plurality of forms of progressivelyincreasing area,

each comprising a plate with four pins projecting therefrom and theplates being ar ranged side by side, each plate of the smaller formshaving openings through which the pins of the next adjacent form maypass and means to move said plates together to bring each set of pinsprogressively into operative position, and a follower plate havingopenings adapted to receive the ends of all of said pins and arranged tobe moved toward and away from said forms.

6. In a coil winding machine, a first form comprising a plate and aplurality of pins projecting therefrom, .a second form comprising aplate parallel to the plate of the first form and having plurality ofpins projecting therefrom normally out of the plane of the pins of thefirst form and located so as to bound an area larger than the area ofthe first form, theplate of the first form being adaptedto permit thepins of the second. form to pass into the plane of the pins of the firstform, means to rotate said forms and means to move the second form intothe plane of the pins of the first form.

7. .In a coil winding machine, a first form comprising a plate and aplurality of pins projecting therefrom, a second form comprising a plateparallel to the plate of the first form and having a plurality of pinsprojecting therefrom normally out of the plane of the pins of the firstform and located so as to bound an area larger than the area of thefirst form, the plate of the first form being adapted to permit the pinsof the second form to pass into the plane ofthe pins of the first form,means to rotate said forms andautomatic means to move the second forminto the plane of the pins of the first form.

8. In a coil w nding machlne, a plurality of forms of progresslvelylncreaslng area with the smallest form only normally in operativeposition, means to rotate said forms, springs arranged to move saidforms into operative position, a member arranged to restrain saidsprings and a cam connected to said rotating means and arranged topermit said forms to move successively into operative position after apredetermined number of rotations ofeach form.

9. In a coil winding machine, a plurality of forms of progressivelyincreasing area with the smallest form only normally in operativeposition, means to rotate said forms, springs arranged to move saidforms into operative position, a member arranged to restrain saidsprings and a cam connected to said rotating means and arranged topermit said forms to move successively into operative position after apredetermined number of rotations of each form, and a follower adaptedto move toward and away from the front of the form which is-in'operative position. i

10. In a coil winding machine, a plurality I of forms of progressivelyincreasing area with the smallest form only normally in operativeposition, means to rotate said forms, springs arranged to move saidforms into operative position, a member arranged to restrain saidsprings and a cam connected to said rotating means and arranged topermit said forms tomove successively into operative position after aoperative position, means to rotate said forms, and automatic means tomove said forms successively into operative position after the precedingform has been rotated a predetermined number of times.

12. In a coil winding machine, a plurality of forms of progressivelyincreasing area with the smallest form only normally in operativeposition, means to rotate said forms, and automatic means to move saidforms successively into operative position after the preceding form hasbeen rotated a predetermined number of times, and automatic means tostop the rotation of the forms after the last form has been rotated apredetermined number of times when in operative position.

13. In a coil winding machine, aprimary form comprising a plate having aplurality of pins extending from the face thereof, a follower arrangedtobe moved toward and away from said plate and to be held spaced I formcomprising a plate having a plurality of" pins extending from the facethereof, a

follower arranged to be moved toward and away from said plate and to beheld spaced therefrom to form an operating space therebetween with thepins extending across said space, a secondary form comprising a set ofpins parallel with the pins of the primary 7 form and normally out ofsaid operating space and arranged to bound an area larger than the areabounded by the pins of the primary form, means to rotate said forms andsaid follower together and means to move the pins of said secondary formacross said operating space while said forms are rotating.

7 15. In acoil winding machine, a primary form comprising a plate havinga plurality of pins extending from the face thereof, a

follower arranged to be moved toward and away from said plate and to beheld spaced I therefrom'to form an operating space therebetween with thepins extending across said space, a secondary form comprising a set ofpins parallel with the pins of the primary form and normally out of saidoperating space and arranged to bound an area larger than the areabounded by the pins of the primary form, means to rotate said forms andsaid follower together and automatic means to move the pins of saidsecondary form across said operating space while said forms are rotatingand after the primary form has made a predetermined number of rotations.

16. In a coil winding machine, a primary form comprising a plate havinga plurality of pins extending from the face thereof, a follower arrangedto be moved toward and away from said plate and to be held spacedtherefrom to form an operating space therebetween with the pinsextending across said space, a secondary form comprising a set of pinsparallel with the pins of the primary form and normally out of saidoperating space and arranged to bound an area larger than the areabounded by the pins of the primary form, means to rotate said forms andsaid follower together, automatic means to move the pins of saidsecondary form across said operating space while said forms are rotatingand after the primary form has made a predetermined number of rotationsand automatic means to stop the rotation of said forms after apredetermined number of turns of the last form to be moved intooperative position.

form comprising a' plate having a plurality of pins extending fromtheface thereof, a follower arranged to be moved toward and away fromsaid plate and to be held spaced therefrom to form an operating spacetherebetween with the pins extending across said space, a secondary formcomprising aset of pins parallel with the pins of the primary form andnormally out of said operating space and arranged to bound an arealarger than the area bounded by the pins of the primary form, means torotate said forms and said follower together, automatic means to movethe pins of said secondary form across said operating space while saidforms are rotating and after the primary form has made a predeterminednumber of rotations and automatic means to stop the rotation of saidforms after a predetermined number of turns of the last form to be movedinto operative position, and means whereby said secondary form may bereturned to normal position.

18. In a coil winding machine, a primary form comprising a plate havinga plurality of pins extending from the face thereof, a follower arrangedto be moved toward and away from said plate and to be held spacedtherefrom to form an operating space therebetween with the pinsextending across said space, a secondary form comprising a set of pinsparallel with the pins of the primary form and normally out of saidoperating space and arranged to bound an area larger than the areabounded bythe pins of the primary form, means to rotate said forms andsaid follower together, automatic means to move the pins of saidsecondary form across said operating space while said forms are rotatingand after the primary form has made a predetermined number of rotationsand automatic means to stop the rotation of said forms after apredetermined number of turns of the last form to be moved intooperative position, said automatic stopping means being adapted toprevent further rotation of said forms until said secondary form hasbeen returned to normal position.

19. In a coil winding machine, a primary form comprising a plate havinga plurality of pins extending from the face thereof, a follower arrangedto be moved toward and away from said plate and to be held spacedtherefrom to form an operating space therebetween with the pinsextending across said space, a plurality of secondary forms each havinga set of pins parallel with the pins of the primary form, the pins ofthe form next the primary form bounding an area larger than the areabounded by the pins of the primary form and the pins of each successiveform bounding an area larger than the area bounded by thepins of theform next adjacent toward the primary form, a follower plate adapted tobe moved toward 'andaway from the plate of the primary form and arrangedto :be held spaced therefrom to form an operating space therebetween,means to rotate said forms and said follower, and meansto move the :pinsof each form "successively across said operating space. p s

20; In a coil winding machine, a primary form comprising a plate havinga plurality of pins extending from the "face thereof, a

follower arranged to be moved toward and away from said plate and to beheld spaced.

therefrom to formf an operating space therebetween with the pinsextending across said space, a plurality'of secondary forms each having'a set of pins parallel withthe pins of the primary form, the pins ofthe form next the primary form bounding an area larger than the areabounded by the pins of the primary form and the'pins of each successiveform bounding an-area larger than the area bounded by the pins of theform of pins extending from the face thereof, a

follower arranged to be moved toward and away from said plate and to beheld spaced therefrom to form an operating space therebetween with thepins extending across said space, a plurality of secondary forms eachhaving a set of pins parallel with the pins of the primary form, thepins of the form next the primary form bounding an area larger than thearea bounded by the pins of the primary form and the pins of eachsuccessive form bounding an area larger than .the area bounded by thepins of the form next adjacent toward the primary form, a follower plateadapted to be moved toward and away from the plate of the primary formand arranged to be held spaced therefrom to form an operating spacetherebetween, means to rotate said forms and said follower, andautomatic means to move the pins of each form successively across saidoperating space after the preceding form has made a predetermined numberof turns when in operative position, and automatic means to stop therotation of said forms after the last form has made its predeterminednumber of rotations when in operative position.

22. In a coil winding machine, a primary form comprising a plate havinga plurality of pins extending from the face thereof, a

follower arranged to be moved toward and away from sald plate and to beheld spaced therefrom to form an operating space therebetween with thepins extending across said space, a plurality of secondary forms eachhavmg a'set of pins parallel with the pins of the vprimary form, thepins of the form next the primary form bounding an area larger than thearea bounded by the pins of the primary form and the pins of eachsuccessive form bounding an area larger than thearea bounded by the pinsof the form next adjacent toward the primary form, a follower plateadapted to be moved toward and away from the plate of the primary formand arranged to be held spacedQtherefrom to form an operating spaceth'e'rebetween, means to rotate said forms and said follower, andautomatic -means'to move the pins of each form successively across saidoperating space after the preceding form has made a predetermined numberof turns when in operative position, said means comprising springsarranged to move said secondary forms into operative position, a memberto restrain said springs and a cam rotated in unison with said forms andadapted to operate said member to permit said springs to move saidsecondary forms successively into operative position after apredetermined number of turns of each preceding form.

23. In a coil winding machine, a primary form comprising a plate havinga plurality of pins extending from the face thereof, a follower arrangedto be moved toward and away from said plate and to be held spacedtherefrom to form an operating space therebetween with the pinsextending across said space, a plurality of secondary forms each havinga set of pins parallel with the pins of the primary form, the pins ofthe form next the primary form bounding an area larger than the areabounded by the pins of the'primary form and the pins of each successiveform bounding an area larger than the area bounded by the pins of theform next adjacent toward the primary form, a follower plate adapted tobe moved toward and away from the plate of the primary form and arrangedto be held spaced therefrom to form an operating space therebetween,means to rotate said forms and said follower, and automatic means tomove the pins of each form successively across said operating spaceafter the preceding form has made a predetermined number of turns whenin operative position, said means comprising springs arranged to movesaid secondary forms into operative position, a member to restrain saidsprings and a cam rotated in unison with said forms and adapted tooperate said member to permit said springs to move said secondary formssuccessively into operative position after a V predetermined number ofturns of each preof pins extending from the face thereof, a

follower arranged to be moved toward and away-from said plate and to beheld spaced therefrom to form an operating space therebetween with thepins extending across said space, a plurality of secondary forms eachhaving a set of pins parallel with the pins of the primary form, thepins of the form next the primary form bounding an area larger than thearea bounded by the pins of the primary form and the pins of eachsuccessive form bounding an area larger than the area bounded by thepins of the form next adjacent toward the primary form, a follower plateadapted to be moved toward and away from the plate of the primary formand arranged t be held spaced therefrom to form an operating spacetherebetweeu, means to rotate said forms and said follower, andautomatic means to move the pins of each form successively acrosssaidoperating space after the preceding form has made a predetermined numberof turns when in operative position, said means comprising springsarranged to movesaid secondary forms into operative position, a mem berto restrain said springs and a cam rotated in unison with said forms andadapted to operate said member to permit said springs to move saidsecondary forms successively into operative position after apredetermined number of turns of each preceding form, said member beingadapted to stop the rotation of said forms after the last form has madeits predetermined number of rotations when in operative position, andmeans whereby said secondary form may be returned to inoperativeposition,-

' follower arranged to, be moved toward and V awayfrom said plate and tobe held spaced therefrom to form an operating space therebetween withthe pins extending across said space, a plurality of, secondary formseach having a set of pins parallel with the pins of the primary form,the pins ofthe form next the primary formcbounding an area larger thanthe area bounded by the pins of the primary form and the pins of eachsuccessiveform bounding an area larger than the area bounded by the pinsofthe form next adjacent toward the primary form, a fol lower plateadapted to be movedtoward and awayfrom the plate ofthe primary form andarranged to be held spaced therefrom to form an operating spacetherebetween, means to rotatesaid forms and said follower, and automaticmeans to move the pins of each form successively across said operatingspace after the preceding form has made a predetermined number of turnswhen in operative position, said means comed to operate said member topermit said springs to move said secondary forms successively intooperative position after a pre determined number of turns of eachpreceding form, said member being adapted to stop the rotation of saidforms after the last form has made its predetermined number of rotationswhen in operative position, and means whereby said secondary form may bereturned to inoperative position, said memher being arranged to preventthe further rotation of said forms until said secondary forms have beenreturned to inoperative position.

CHARLES W. FRANCIS.

